e) Connect the RLC load configured

e) Connect the RLC load configured in step d) to the EUT by closing S2. Close S1 and turn the EUT on, making certain that the power output is as determined in step a). Adjust R, L, and C as necessary to ensure that the fundamental (50 Hz or 60 Hz) component of current IAC through S1 is 0,0 A with a tolerance of ±1 % of the rated current of the EUT on a steady state basis in each phase.4 The purpose of the procedure up to this point is to zero out the fundamental frequency components (50 Hz or 60 Hz) of active and reactive power, or to zero out the fundamental frequency component of current flow, at the utility disconnect switch. System resonance will typically generate harmonic currents in the test circuit. These harmonic currents will typically make it impossible to zero out an r.m.s. measurement of power or current flow at the disconnect switch. Because of test equipment measurement error and some impact from harmonic currents, it may be necessary to make small adjustments in the test circuit to achieve worst case islanding behavior. Step h) is performed to make these small adjustments. f) Open the utility-disconnect switch S1 to initiate the test. Run-on time, tR, shall be recorded as the time between the opening of switch S1 and the point at which the EUT output current drops and remains below 1 % of its rated output levels. Annex C gives some information related to the use of a gate blocking signal. g) For test condition A in Table 5 (100 %), adjust the active load and only one of the reactive load components (either capacitance, C, or inductance, L, may be chosen) to each of the load imbalance conditions shown in the shaded portion of Table 6. The values in Table 6 represent changes from the nominal values determined in steps d) and e) as a percentage of those nominal values. The values in Table 6 show the active and reactive power flow at S1 in Figure 1, with positive value denoting power flow from the EUT to the AC power source. After each adjustment, an island test is run and run-on time is recorded. If any of